Dynamic vapour compensation option for radar level sensors
14 July 2009
Emerson Process Management has introduced a option for its Rosemount 5300 Series of High Performance Guided Wave Radar (GWR) level transmitters. The Dynamic Vapour Compensation (DVC) option eliminates accuracy errors associated with varying pressure and/or temperature that occur in vessels where steam vapour is present.
Dynamic vapour compensation option for radar level sensors
The greater accuracy achieved, combined with no moving parts or calibration requirements, can improve overall plant efficiency and reduce maintenance costs for operators in a range of processing industries.
Unlike traditional technologies the DVC option, which comprises of a probe with built-in reflector and software, is corrosion-resistant, offers improved safety with gastight dual seal, has no moving parts and is maintenance-free. Designed for challenging level and interface measurements on liquids, slurries and solids, the 5300 series GWR transmitters are virtually unaffected by process conditions and have almost no installation requirements.
The DVC uses a reference reflector at a fixed distance on a rigid single probe to measure the vapour dielectric. This measurement is then used to automatically compensate for vapour dielectric changes resulting in a final accuracy of within 2%.
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